Geometry
Angles #
Obtuse angle
Acute angle
Right angle
an angle that is more than 90 degrees
any angle that is less than 90 degrees
an angle that is exactly 90 degrees
Reflex angle
any angle that is more than 180 degrees but less than 360
Exterior angles
the angle between a side of a rectilinear figure and an adjacent side extended outward.
corresponding angles #
angles that are on the same side of a Transversal that cuts two lines, and on the same side of each line
Interior angles
complementary angles #
two angles who's sum is 90 degrees
alternate angle
supplementary angles
two angles who's sum equal 180 degrees
angles that are between two lines and are on opposite sides of the traversal that cuts the two lines
Quadrilaterals
any four sided shape
Irregular Quadrilaterals
regular Quadrilaterals
Irregular quadrilaterals are the opposite of regular quadrilaterals they have four sides but they are not all equal
Rgular qudrelaterals are any four sided shape with all sides being an equal length
EX: 
polygons #
any shape wit at least three straight lines and three angles
Types of polygons
Quadrilaterals
Triangles
Pentagon
hexagon
heptagon
Octagon
nonagon
decagon
decagon
12 sides
10 sides
nine sides
seven sides
eight sides
five sides
four sides
three sides
six sides
is a statement about the right triangle where the square of the hypotenuse is equal to the sum of the squares of the other two sides.
the hypotenuse is the longest side of a triangle
Formula: A squared + B squared = C squared
Bisector
a traversal is a line that goes trough two or more lines that are usually parallel
parallel lines are lines that always have the same distance between each-other no matter how much longer they get and will never intersect or touch each-other
A bisector is something that cuts an object into two equal parts. It is applied to angles and line segments
a segment line In geometry, a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoint
perpendicular bisector
perpendicular bisector is a special kind of segment, ray, or line that. (1) intersects a given segment at a 90° angle, and. (2) passes through the given segment's midpoint
